Physical changes only affect the appearance of an object. While chemical happens to the chemical make up and cannot be reversed. Think of it this way- physical change is like hair tint , it wears off- chemical is like permanent hair dye, it's permanent.
Answer:
the terminator because i did this test
The molecules of Li₂O that would produce if you used up 6 atoms of Li(s) is 3.
<h3>What is Lithiumdioxide?</h3>
It is an unstable inorganic and radical compound, used in the manufacture of glass and ceramic.
The balanced equation

If the atoms of lithium moves up to 6 the lithium oxide molecules will be 3, as you can see in the equation.
Thus, the molecules of Li will be 3.
Learn more about lithium dioxide
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Answer:
"1 M" will be the right solution.
Explanation:
The given values are:
Number of moles,
= 2 moles
Volume of solution,
= 2000 mL
or,
= 2 L
Now,
The molarity of the solution will be:
= 
On substituting the values, we get
= 
= 
A Lewis structure is a model that uses electron-dot structures to show how electrons are arranged in molecules.
total valance electron of SeCl2 = 20
valance electon of Se= 6
valance electron of two Cl= 14
in figure shows that two bond pairs, two bond present between Se and Cl
Non bonded electron is 16
and bond pair of electron is 4